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Analysis of failed flexible coupling of variable diffuser drive system of 1.2 m tunnel

IR@NAL: CSIR-National Aerospace Laboratories, Bangalore

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Title Analysis of failed flexible coupling of variable diffuser drive system of 1.2 m tunnel
 
Creator Suresh Kumar, M
Sujata, M
Madan, M
Venkataswamy, MA
Bhaumik, SK
 
Subject Aeronautics (General)
Chemistry and Materials (General)
 
Description A failure occurred in the geared flexible coupling of variable diffuser drive system of 1.2 m tunnel during movement. Post failure inspection revealed that driving gear of the left coupling had fractured into three pieces. Fractographic study confirmed that the gear had failed by fatigue. Evidences suggest that the key of the right coupling had sheared off sometime in the past. This had resulted in excessive load on the left coupling leading to multiple fatigue crack initiation and failure of the driving gear. A detailed analysis of the failure is presented in this report. A few recommendations are also made to prevent recurrence of similar failure.
 
Publisher National Aerospace Laboratories
 
Date 2006
 
Type Proj.Doc/Technical Report
NonPeerReviewed
 
Identifier Suresh Kumar, M and Sujata, M and Madan, M and Venkataswamy, MA and Bhaumik, SK (2006) Analysis of failed flexible coupling of variable diffuser drive system of 1.2 m tunnel. Project Report. National Aerospace Laboratories, Bangalore.
 
Relation http://nal-ir.nal.res.in/9849/